CDS

1999A&A...342..823V

Query : 1999A&A...342..823V

1999A&A...342..823V - Astronomy and Astrophysics, volume 342, 823-830 (1999/2-3)

A near-infrared study of the planetary nebula NGC 2346.

VICINI B., NATTA A., MARCONI A., TESTI L., HOLLENBACH D. and DRAINE B.T.

Abstract (from CDS):

This paper presents new near-infrared observations of the planetary nebula NGC 2346. The data include a broad K-band image, an image in the H2 vibrationally excited 1-0S(1) line and K band slit spectra at three positions in the nebula. In the H2 1-0S(1) line, the nebula is characterized by a central, bright torus, surrounded by weaker emission with a typical butterfly shape, as seen in Hα and CO lines. The K band spectra show 11 H2 lines with excitation energies from 6150 to 12552K. The H2 data have been compared to the predictions of models which follow the evolution with time of the H2 emission in PNe of different core mass and shell properties (Natta & Hollenbach, 1998A&A...337..517N). These models compute the emission originating in the photodissociation region (PDR) created at the inner edge of the neutral shell by the UV radiation of the central core, as well as the emission in the shock associated with the expansion of the shell inside the precursor red-giant wind. In NGC 2346, a PDR origin of the H2 emission in a low-density molecular shell (n≲104cm–3) is indicated. At these low densities, time-dependent H2 chemistry and X-ray heating of the neutral gas enhance the predicted PDR H2 line intensity by large factors.

Abstract Copyright: ∼

Journal keyword(s): shock waves - ISM: molecules - ISM: planetary nebulae: individual: NGC 2346 - infrared: ISM: lines and bands

Simbad objects: 1

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Number of rows : 1
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022 		#notes
1 NGC 2346 PN 07 09 22.5215800440 -00 48 23.610997332   11.76 11.58     A5V 564 0

Query : 1999A&A...342..823V

Basic data :
NGC 2346 -- Planetary Nebula
Origin of the objects types :

(Ref) Object type as listed in the reference "Ref"
(acronym) Object type linked to the acronym according to the original reference
() Anterior to 2007, before we can link the objet type to a reference, or given by the CDS team in some particular cases

Other object types: 		* (AG,CSI,...), PN (2013MNRAS,PK,...), IR (IRAS,2MASS,...), V* (V*,AAVSO)
Syntax of coordinates is : "ra dec (wtype) [error ellipse] quality bibcode" :
  • ra dec : right ascension and declination (unit and frame defined according to your Output Options)
    Grey values are increasing the original precision due to the computation of frame transformations
  • (wtype) : wavelength class for the origin of the coordinates (Rad, mm, IR, Optical, UV, Xray, Gam)
  • [error ellipse] : measurement uncertainty, on (ra,dec) if the positional angle is 90 degrees, on (majaxis,minaxis) otherwise (in mas at defined epoch in the original catalogue),
    position angle (in degrees North celestial pole to East)
  • quality : flag of quality
    • E ≥ 10"
    • D : 1-10" (and some old data)
    • C : 0.1-1"
    • B : 0.01-0.1" + 2MASS, Tyc
    • A : VLBI, Hipparcos
  • bibcode : bibcode of the coordinates reference
ICRS coord. (ep=J2000) : 		07 09 22.5215800440 -00 48 23.610997332 (Optical) [ 0.0162 0.0143 90 ] A 2020yCat.1350....0G
Syntax of coordinates is : "ra dec (wtype) [error ellipse] quality bibcode" :
  • ra dec : right ascension and declination (unit and frame defined according to your Output Options)
    Grey values are increasing the original precision due to the computation of frame transformations
  • (wtype) : wavelength class for the origin of the coordinates (Rad, mm, IR, Optical, UV, Xray, Gam)
  • [error ellipse] : measurement uncertainty, on (ra,dec) if the positional angle is 90 degrees, on (majaxis,minaxis) otherwise (in mas at defined epoch in the original catalogue),
    position angle (in degrees North celestial pole to East)
  • quality : flag of quality
    • E ≥ 10"
    • D : 1-10" (and some old data)
    • C : 0.1-1"
    • B : 0.01-0.1" + 2MASS, Tyc
    • A : VLBI, Hipparcos
  • bibcode : bibcode of the coordinates reference
FK4 coord. (ep=B1950 eq=1950) : 		07 06 49.6461083197 -00 43 30.142585622 [ 0.0162 0.0143 90 ]
Syntax of coordinates is : "ra dec (wtype) [error ellipse] quality bibcode" :
  • ra dec : right ascension and declination (unit and frame defined according to your Output Options)
    Grey values are increasing the original precision due to the computation of frame transformations
  • (wtype) : wavelength class for the origin of the coordinates (Rad, mm, IR, Optical, UV, Xray, Gam)
  • [error ellipse] : measurement uncertainty, on (ra,dec) if the positional angle is 90 degrees, on (majaxis,minaxis) otherwise (in mas at defined epoch in the original catalogue),
    position angle (in degrees North celestial pole to East)
  • quality : flag of quality
    • E ≥ 10"
    • D : 1-10" (and some old data)
    • C : 0.1-1"
    • B : 0.01-0.1" + 2MASS, Tyc
    • A : VLBI, Hipparcos
  • bibcode : bibcode of the coordinates reference
Gal coord. (ep=J2000) : 		215.6988337153870 +03.6212050697720 [ 0.0162 0.0143 90 ]
Syntax of proper motions is : "pm-ra pm-dec [error ellipse] quality bibcode"
  • pm-ra : mu-ra*cos(dec) (expressed in the ICRS system in mas/yr)
  • pm-dec : mu-dec (expressed in the ICRS system in mas/yr)
  • [error ellipse] : error major axis and minor axis (in mas), orientation angle (in deg)
  • quality : flag of quality (A=best quality -> E=worst quality, {� } =unknown quality)
  • bibcode : bibcode of the proper motion reference
Proper motions mas/yr : 		-2.072 -1.213 [0.018 0.016 90] A 2020yCat.1350....0G
Syntax of radial velocity (or/and redshift) is : "value [error] (wavelength) quality bibcode"
  • value : radial velocity or/and redshift (Heliocentric frame) according to your Output Options
    (redshift may be not displayed if the data value is <0 and the database inside value is a radial velocity)
  • [error] : error of the corresponding value displayed before
  • (wavelength) : wavelength range of the measurement : Rad, mm, IR, Opt, UV, Xray, Gam or  '∼'(unknown)
  • quality : flag of quality ( A=best quality -> E=worst quality, {� } =unknown quality)
  • bibcode : bibcode of the value's origin
Radial velocity / Redshift / cz : 		V(km/s) 47.00 [~] / z(~) 0.000157 [~] / cz 47.00 [~]
   D 1994A&AS..108..603B
Syntax of parallax is : 'value quality [error] bibcode'
  • value : parallax value
  • quality : flag of quality (A=best quality -> E=worst quality, {� } =unknown quality)
  • [error] : mean error
  • bibcode : bibcode of the parallax reference
Parallaxes (mas): 		0.7223 [0.0179] A 2020yCat.1350....0G
Spectral type is made of 3 parts: %coding is composed of 4 parts :
  • the spectral type, which is made of a temperature class, eventually a luminosity class (roman number) and/or spectral peculiarities;
  • a quality letter: A=best quality→E=worst quality, {� } =unknown quality %
  • a quality letter: A=best quality -> E=worst quality, {� } =unknown quality
  • bibcode : bibcode of the spectral type reference
Spectral type: 		A5V C 1978MNRAS.185..647M
Syntax of angular size is : "maj-axis min-axis angle (wtype) quality bibcode"
  • maj-axis : major axis size (arc minutes)
  • min-axis : minor axis size (arc minutes)
  • angle : orientation angle (in degrees)
  • (wtype) : wavelength class for the origin of the angular size (Rad, mm, IR, Opt, UV, Xray, Gam)
  • quality : flag of quality of the angular size values ( A=best quality -> E=worst quality, {� } =unknown quality)
  • bibcode : bibcode of the angular size reference
Angular size (arcmin): 		0.910 0.910 90 (Rad) D 2008ApJ...689..194S
Syntax of fluxes (or magnitudes) is : "filter-name (System) flux-value [error] quality MultVarFlags bibcode"
  • filter-name : U, B, V, R, I, G, J, H, K, u, g, r, i, z
  • (System) : may be AB (default is Vega)
  • flux-value : value of flux or magnitude
  • [error] : error value
  • quality : flag of quality of the flux value ( A=best quality -> E=worst quality, {� } =unknown quality)
  • MultVarFlags : Mult is zero or one char (J) for joined photometry ; Var can be zero or two chars (V[0-4])
  • bibcode : bibcode of the flux reference
Fluxes (6) :
B 11.76 [0.09] D 2000A&A...355L..27H
V 11.58 [0.13] D 2000A&A...355L..27H
G 11.188902 [0.002785] C 2020yCat.1350....0G
J 10.256 [0.022] C 2003yCat.2246....0C
H 9.444 [0.025] C 2003yCat.2246....0C
K 8.407 [0.023] C 2003yCat.2246....0C
SIMBAD within arcmin
', {sourceSize:12, color:'#30a090'})); aladin.on('objectClicked', function(object) { var objName=object.data.MAIN_ID; aladin.showPopup(object.ra,object.dec,'',''+ objName+''); });" title="Show Simbad objects"> Overlay Simbad points in this preview
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within arcsec The VizieR photometry tool allows for easy visualization of photometry points extracted around the Simbad position from photometry-enabled catalogues in VizieR.
The search radius has to be specified by the user. It is currently limited to a maximum of 30 arcsec. It depends mostly on the precision or quality of the coordinates (SIMBAD and VizieR catalogs), the resolution of the images from which the sources were extracted, source extent, and source crowding.
Suggestions are: crowded field: 0.5 to 1.5 arcsec, 3 arcsec otherwise; uncertain coordinates (SIMBAD quality E or coordinates without reference): 5 to 30 arsec (risky!). sed-help-icon

The link on the acronym of the identifiers give access to the information for this acronym in the dictionary of nomenclature.
Identifiers (29) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

NGC 2346 2MASS J07092252-0048234 PPM 176711 [LFO93] 0706-00
AG-00 965 PK 215+03 1 PSCz P07068-0043 AAVSO 0704-00
CSI-00-07068 PN G215.6+03.6 SCM 20 Gaia EDR3 3109444657456300288
GSC 04815-03818 PN Sa 2-5 TIC 5002191 Gaia DR1 3109444653159703040
HD 293373 PN M 1-10 TYC 4815-3818-1 Gaia DR2 3109444657456300288
HIC 34541 PN ARO 80 UCAC2 31477215
HIP 34541 PN VV 33 V* V651 Mon
IRAS 07068-0043 PN VV' 54 WB89 954

References (564 between 1850 and 2022) (Total 564)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
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Collections of Measurements


velocities : 1    distance : 3    PLX : 3    PM : 5    MK : 5   

   

Observing logs


herschel : 2    ISO : 2    IUE : 6    XMM : 1   

   

External archives :

Data at NED - NASA/IPAC Extragalactic Database : NGC 2346

Link by name to the catalogue in VizieR :

NGC 2346 AG-00 965 GSC 04815-03818 HD 293373 HIC 34541
HIP 34541 IRAS 07068-0043 2MASS J07092252-0048234 PN G215.6+03.6 PPM 176711
TYC 4815-3818-1 UCAC2 31477215 V* V651 Mon Gaia EDR3 3109444657456300288 Gaia DR1 3109444653159703040
Gaia DR2 3109444657456300288

Search by coordinates in Vizier (radius: 5 arcsec)

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2022.05.24-07:56:45

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